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Dr. Goodchem, while searching for the cure to cancer, found a solution that contained taxol. He found that the the concentration of taxol in ether was 27 g/100 ML ether. He found that the concentration of taxol in water was 0.75 g/100 mL H2O. What was the partition coefficient of taxol?
Calculate the change in entropy that occurs when 18.66 g of ice at -14.6°C is placed in 54.05 g of water at 100.0°C in a perfectly insulated vessel.
The vapor pressure of liquid Ni is 0.100 torr at 1606 degrees C and 1.00 torr at 1805 degrees C. The molar heat of fusion of Ni is 3.25 kcal/mol. Determine the vapor pressure of solid Ni at 1200 degrees C.
A balloon was filled to a volume 2.50 L when the temperature was 30.0 degrees C. What would the volume become if the temperature dropped to 11.0 degrees C
The pH of a sample of rain is found to be 4.0. Calculate the percentage of HSO4- that is ionized in this sample, given that the acid dissociation constant for the second stage of ionization of H2SO4 is 1.2E-2.
What do you think might happen during the solvent migration up the paper if the two long edges of the filter paper overlapped when folded
Concrete used in road construction is reinforced using steel bars in a grid, known collectively as "rebar." After many years, rebar will begin to corrode, and the concrete will weaken.
Nitrogen forms several gaseous oxides. One of them has a density of 0.869 g L-1 measured at 764 mmHg and 150°C. Write the formula of the compound.
A 15.0 mg sample of a protein is dissolved in water to make 27.0 ml of solution. The osmotic pressure of the solution is 0.56 torr at 25 C. What is the molar mass of the protein?
Calculate the concentration of the carbonate ion, CO3-, in a 0.010 M H2CO3 solution that has the stepwise dissociation constants Ka1 = 4.3 × 10-7 and Ka2 = 5.6 × 10-11.
A certain substance has a heat of vaporization of 37.43 kJ/mol. At what Kelvin temperature will the vapor pressure be 7.00 times higher than
The electrolysis of molten A12O3 at 980 ºC is used to produce metallic aluminum. A current of 658 A is used in the electrolysis cell. What is the rate of formation of aluminum, in kilograms per hour
Silver chloride, often used in silver plating, contains 75.27% Ag.Calculate the mass of silver chloride in grams required to make 6.0 g of silver plating.
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